MiG-21

The Mikoyan-Gurevich MiG-21 (Russian: Микоян и Гуревич МиГ-21) (NATO reporting name "Fishbed") is a supersonic jet fighter aircraft, designed and built by the Mikoyan-Gurevich Design Bureau in the Soviet Union. It was popularly nicknamed "balalaika", from the aircraft's planform-view resemblance to the Russian stringed musical instrument or ołówek (English: pencil) by Polish pilots due to the shape of its fuselage.[2] Early versions are considered second-generation jet fighters, while later versions are considered to be third-generation jet fighters. Some 50 countries over four continents have flown the MiG-21, and it still serves many nations a half-century after its maiden flight. The fighter has the distinction of holding a number of modern aviation records; it is the most produced supersonic jet aircraft in aviation history, the most produced combat aircraft since the Korean War, and it had the longest production run of a combat aircraft (1959 to 1985 over all variants[1]).
The MiG-21 jet fighter was a continuation of Soviet jet fighters, starting with the subsonic MiG-15, MiG-17, and the supersonic MiG-19. A number of experimental Mach 2 Soviet designs were based on nose intakes with either swept-back wings, such as the Sukhoi Su-7, or tailed deltas, of which the MiG-21 would be the most successful.